/usr/lib/xorg/Xorg:6:OsAbort:AbortServer:FatalError:dix_main:__libc_start_call_main

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding xorg-server. This problem was most recently seen with package version 2:21.1.3-2ubuntu2, the problem page at https://errors.ubuntu.com/problem/f32979eb9251bc31b3b1460dc3a27b4fc2d48007 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.

[Daniel van Vugt (vanvugt)]

The details in https://errors.ubuntu.com/problem/f32979eb9251bc31b3b1460dc3a27b4fc2d48007 currently show this is bug 1543192. Although that may change in future if errors.ubuntu.com changes which crash report and error message it displays.